SUSE SLED12 / SLES12 Security Update : ntp (SUSE-SU-2016:1568-1)

High Nessus Plugin ID 91663


The remote SUSE host is missing one or more security updates.


ntp was updated to version 4.2.8p8 to fix 17 security issues.

These security issues were fixed :

- CVE-2016-4956: Broadcast interleave (bsc#982068).

- CVE-2016-2518: Crafted addpeer with hmode > 7 causes array wraparound with MATCH_ASSOC (bsc#977457).

- CVE-2016-2519: ctl_getitem() return value not always checked (bsc#977458).

- CVE-2016-4954: Processing spoofed server packets (bsc#982066).

- CVE-2016-4955: Autokey association reset (bsc#982067).

- CVE-2015-7974: NTP did not verify peer associations of symmetric keys when authenticating packets, which might allowed remote attackers to conduct impersonation attacks via an arbitrary trusted key, aka a 'skeleton key (bsc#962960).

- CVE-2016-4957: CRYPTO_NAK crash (bsc#982064).

- CVE-2016-2516: Duplicate IPs on unconfig directives will cause an assertion botch (bsc#977452).

- CVE-2016-2517: Remote configuration trustedkey/requestkey values are not properly validated (bsc#977455).

- CVE-2016-4953: Bad authentication demobilizes ephemeral associations (bsc#982065).

- CVE-2016-1547: CRYPTO-NAK DoS (bsc#977459).

- CVE-2016-1551: Refclock impersonation vulnerability, AKA: refclock-peering (bsc#977450).

- CVE-2016-1550: Improve NTP security against buffer comparison timing attacks, authdecrypt-timing, AKA:
authdecrypt-timing (bsc#977464).

- CVE-2016-1548: Interleave-pivot - MITIGATION ONLY (bsc#977461).

- CVE-2016-1549: Sybil vulnerability: ephemeral association attack, AKA: ntp-sybil - MITIGATION ONLY (bsc#977451).

This release also contained improved patches for CVE-2015-7704, CVE-2015-7705, CVE-2015-7974.

The update package also includes non-security fixes. See advisory for details.

Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.


To install this SUSE Security Update use YaST online_update.
Alternatively you can run the command listed for your product :

SUSE Linux Enterprise Server 12 :

zypper in -t patch SUSE-SLE-SERVER-12-2016-933=1

SUSE Linux Enterprise Desktop 12 :

zypper in -t patch SUSE-SLE-DESKTOP-12-2016-933=1

To bring your system up-to-date, use 'zypper patch'.

See Also

Plugin Details

Severity: High

ID: 91663

File Name: suse_SU-2016-1568-1.nasl

Version: $Revision: 2.11 $

Type: local

Agent: unix

Published: 2016/06/17

Modified: 2018/01/31

Dependencies: 12634

Risk Information

Risk Factor: High


Base Score: 7.5

Temporal Score: 6.2

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P

Temporal Vector: CVSS2#E:F/RL:OF/RC:ND


Base Score: 9.8

Temporal Score: 9

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:F/RL:O/RC:X

Vulnerability Information

CPE: p-cpe:/a:novell:suse_linux:ntp, p-cpe:/a:novell:suse_linux:ntp-debuginfo, p-cpe:/a:novell:suse_linux:ntp-debugsource, p-cpe:/a:novell:suse_linux:ntp-doc, cpe:/o:novell:suse_linux:12

Required KB Items: Host/local_checks_enabled, Host/cpu, Host/SuSE/release, Host/SuSE/rpm-list

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 2016/06/14

Reference Information

CVE: CVE-2015-7704, CVE-2015-7705, CVE-2015-7974, CVE-2016-1547, CVE-2016-1548, CVE-2016-1549, CVE-2016-1550, CVE-2016-1551, CVE-2016-2516, CVE-2016-2517, CVE-2016-2518, CVE-2016-2519, CVE-2016-4953, CVE-2016-4954, CVE-2016-4955, CVE-2016-4956, CVE-2016-4957

OSVDB: 129309, 129310, 133387, 137711, 137712, 137713, 137714, 137731, 137732, 137733, 137734, 137735, 139280, 139281, 139282, 139283, 139284